Photovoltaic

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dagoski
Documentation for LK

I've just started to learn LK. The syntax seems easy enough to grok, but there's not a lot of documentation on how to do fairly elementary things. Is there a good set of documentation that covers things like how to create a new case and run a simulation. I've watched some of the video, but it only seems to cover how to work with an existing case. I'm working with a batch of parcels and would like to create cases for each. Would it be smarter to create a template case and change only the relevant parameters, system size in my case, then write the output to a file?

1 post / 0 new
dagoski
Documentation for LK

I've just started to learn LK. The syntax seems easy enough to grok, but there's not a lot of documentation on how to do fairly elementary things. Is there a good set of documentation that covers things like how to create a new case and run a simulation. I've watched some of the video, but it only seems to cover how to work with an existing case. I'm working with a batch of parcels and would like to create cases for each. Would it be smarter to create a template case and change only the relevant parameters, system size in my case, then write the output to a file?

2 posts / 0 new
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syj9065
Error running API provided (Cant find PySSC)

I'm trying to run the API codes in Jupyter Notebook with python 2.7 after installing SDK.
However, I keep having same error that it says it can't find the library. Exact error message is copied below:
dlopen(/Applications/sam-sdk-2015-6-30-r3/languages/python/..\..\/osx64/ssc.dylib, 6): image not found

I have downloaded SDK and unzipped and moved to Applications folder but it still can't find the file.
Can someone please help or give me instruction on this?

4 posts / 0 new
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mikeroberts
Time Zones to adjust for hourly weather data

Hi Paul,

I'm creating real year weather files to use for modelling PV systems at a number of sites in Australia. I'm using hourly satellite irradiance data from the Bureau of Meteorology, along with hourly temp and windspeed from BOM Automatic Weather Stations.

I'm using the SAM SDK to calculate DHI for the weather file, but am having some difficulty trying to use timezones to correct for the fact that the irradiance data is recorded at a number of minutes past the hour.

2 posts / 0 new
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Ashokprasadaryal
Ashokprasadaryal's picture
Multi Inverter Single system design

I wanted to design a 115kWp project with 4 inverters 25kW and fifth inverter 15kWp. How is it possible? How can i use different and more than 1 inverter in a single system? Thank You.

Also, how can i import new inverter data during design which is not originally available?

5 posts / 0 new
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bruna
bruna's picture
Send data to Excel

Hi,

When I try to send the data to excel, it goes from a value that's suppose to be 1.0 to 100.000. Also, when I check the battery data and try to send those to excel, they come all wrong, it's suppose to be a value 1e^-16 and ir goes 1e^-11 or 1e^-12, it doesn't have a pattern.

6 posts / 0 new
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lwkerber
Modeling On-peak Demand

I have a utility that charges for demand pricing for both power supply (generation) and delivery. The demand components are:

Power Supply - $16/kW for on-peak demand (between 11:00am and 7:00pm M-F)
Deliver - $4/kW for maximum demand (any time during the month)

How do I model on-peak demand to be between 11:00-7:00 and maximum demand any time?

5 posts / 0 new
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elsaMeteo
Problems with Electric Load

Dear Paul,

Photovoltaic Reliability Performance Model (PV-RPM v2.0 Beta)

What is it:

Sandia National Laboratories (SNL) and National Renewable Energy Laboratory (NREL) have partnered to bring you this public Beta version of the PV Reliability Performance Model Version 2.0 (PV-RPM v2.0) that can be run from the LK scripting environment within SAM. This new feature is provided in SAM to allow users with reliability data the ability to develop and run scenarios where PV performance and costs are impacted from components that can fail stochastically.

2 posts / 0 new
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klucas@energy.s...
Changing month to calculate rolled over kWh?

Hi,

Is there a way to change the month when the "Sell rate for kWh rolled over at end of year" calculation takes place? It seems that SAM defaults to cashing out credits at the end of December, but a number of states have a different month that allows kWh to be carried forward through the winter before being cashed out (for example, Maryland is the end of April at a generation-only rate).

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